Faunt, Claudia C.2012ZONE package of the Central Valley Hydrologic Modelvector digital dataReston, VirginiaU.S. Geological Surveyhttps://water.usgs.gov/lookup/getspatial?pp1766_ZONEFaunt, Claudia C. (editor)2009Groundwater Availability of the Central Valley Aquifer, CaliforniaProfessional Paper1766Reston, VirginiaU.S. Geological Survey3 chapters, 1 appendixhttps://pubs.usgs.gov/pp/1766/PP_1766.pdfThis digital dataset defines the model grid, active cells in model layers 2 and 3, and geologic province arrays of the ZONE package used in the transient hydrologic model of the Central Valley flow system. The Central Valley encompasses an approximate 50,000 square-kilometer region of California. The complex hydrologic system of the Central Valley is simulated using the USGS numerical modeling code MODFLOW-FMP (Schmid and others, 2006). This simulation is referred to here as the Central Valley Hydrologic Model (CVHM) (Faunt, 2009). Utilizing MODFLOW-FMP, the CVHM simulates groundwater and surface-water flow, irrigated agriculture, land subsidence, and other key processes in the Central Valley on a monthly basis from 1961-2003. The total active modeled area is 20,334 square-miles on a finite difference grid comprising 441 rows and 98 columns. Slightly less than 50 percent of the cells are active. It has a uniform horizontal discretization of 1x1 square mile and is oriented parallel to the valley axis, 34 degrees west of north (Faunt, 2009). The ZONE Package includes the Corcoran Clay Member of the Tulare Formation, bedrock, and other geologic provinces of the 10 layers of the CVHM. In addition, the active cells in model layers 2 and 3 are identified. The CVHM is the most recent regional-scale model of the Central Valley developed by the U.S. Geological Survey (USGS). The CVHM was developed as part of the USGS Groundwater Resources Program (see "Foreword", Chapter A, page iii, for details).The active cells in model layers 2 and 3, and geologic province arrays of the 10 model layers are components of the ZONE package of MODFLOW-FMP, the USGS 3-dimensional finite-difference code used to simulate flow in the CVHM. The one-square-mile cells were used to define the resolution and extent of the CVHM. In the flow simulation, the ZONE package values are used to define the geologic provinces that augment the hydraulic properties for the CVHM. The CVHM is a tool that accounts for integrated, variable water supply and demand, and simulates surface-water and groundwater-flow across the entire Central Valley system.The CVHM ZONE package dataset is one of many layers in a geospatial database supporting the USGS Central Valley Groundwater Availability Project. Regional groundwater availability studies quantify current groundwater resources, evaluate how those resources have changed through time, and provide tools that decision makers can use to predict system responses to future development and climate variability and change. To provide information to stakeholders addressing these issues, the USGS made a detailed assessment of groundwater availability of the Central Valley aquifer system, which includes: (1) the present status of groundwater resources; (2) characterization of how these resources have changed over time; and (3) tools to assess system responses to stresses from future human uses and climate variability and change. This effort builds on previous investigations, such as the USGS Central Valley Regional Aquifer System and Analysis (CV-RASA) project and several other groundwater studies in the Valley completed by Federal, State and local agencies at various scales. Data from these previous studies were the foundation of the Central Valley geospatial database. These and other data were reexamined through a series of regional-scale hydrologic investigations to provide updated and spatially consistent interpretations for the Central Valley Groundwater Availability study. In some cases, new data were collected to augment existing information. Data compiled from the studies include geology (in particular, borehole lithology and the extent and thickness of the Corcoran Clay Member of the Tulare Formation), topography, remote sensing, climate (precipitation and temperature), geophysics, vegetation and land use, vegetation properties, hydrology (stream network and flows), groundwater levels, subsidence, chemistry, and soils. Digital elevation models, geologic maps, borehole information, cross sections, and other 3-dimensional models were used to develop the texture model which represents the properties and geometry of the Central Valley alluvial deposits. The resulting geospatial database supports characterization and conceptualization of the Central Valley hydrologic system between 1961 and 2003, construction of 3-dimensional hydrogeologic framework and hydrologic flow models, and visualization of analysis and model results.2009publication dateCompleteNone planned-123.831528-117.91632840.74863134.519871ISO 19115 Topic CategoryinlandWatersgeoscientificinformatioNAmerican Geological Institute Glossary of Geology (http://glossary.agiweb.org/dbtw-wpd/glossary/search.aspx)hydrologyhydrogeologymodelgroundwatergeologic provinceNoneCentral Valley AquiferCentral Valley Hydrologic ModelFlow Model CVHMTexture ModelCV-RASAGroundwater Availability of the Central Valley AquifergriddiscretizationU.S. Board of Geographic Names (BGN) and Geographic Names Information System (GNIS)CaliforniaCentral ValleyTrinity CountyShasta CountyTehama CountyHumboldt CountyButte CountyMendocino CountyGlenn CountyYuba CountyLake CountyNevada CountyColusa CountySutter CountyPlacer CountyEl Dorado CountyYolo CountySonoma CountyNapa CountySacramento CountyAmador CountySolano CountyCalaveras CountyTuolumne CountySan Joaquin CountyContra Costa CountyStanislaus CountyAlameda CountyMariposa CountyMadera CountyMerced CountyFresno CountySanta Clara CountySan Benito CountyMonterey CountyTulare CountyKings CountyKern CountySan Luis Obispo CountySanta Barbara CountyVentura CountySacramento ValleySan Joaquin ValleyCentral Valley, CaliforniaNone.
Data have been checked to ensure the accuracy of the data. If any errors are detected, please notify the originating office. The U.S. Geological Survey strongly recommends that careful attention be paid to the metadata file associated with these data. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein.
Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data.
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the dataset in nonproprietary form, as well as in ArcGIS format, this metadata file may include some ArcGIS-specific terminology.
Claudia C. FauntU.S. Geological SurveyHydrologistmailing and physical addressCalifornia Water Science CenterSan Diego Projects Office4165 Spruance Road, Suite 200San DiegoCalifornia92101USA(619) 225-6142(619) 225-6101ccfaunt@usgs.govhttps://water.usgs.gov/GIS/browse/pp1766_ZONE.pngIlllustration of data setpngSpatial datasets supporting the Central Valley Groundwater Availability project were developed primarily by the U.S. Geological Survey's (USGS) Groundwater Resources Program. This program is conducting large-scale multidisciplinary regional studies of groundwater availability. The U.S. Bureau of Reclamation is supporting the updating of the Central Valley datasets and their documentation and release.Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3500Harbaugh, Arlen W.Banta, Edward R.Hill, Mary C.McDonald, Michael G.2000MODFLOW-2000, The U.S. Geological Survey Modular Ground-Water Model - User Guide to Modularization Concepts and the Ground-Water Flow ProcessOpen-File Report2000-92Reston, VAU.S. Geological Surveyhttp://water.usgs.gov/nrp/gwsoftware/modflow2000/ofr00-92.pdfSchmid, WolfgangHanson, R. T.Maddock, Thomas, IIILeake, S. A.2006User guide for the farm process (FMP1) for the U.S. Geological Survey's modular three-dimensional finite-difference ground-water flow model, MODFLOW-2000Techniques and Methods6-A17Sacramento, CAUSGS California Water Science Centerhttps://pubs.usgs.gov/tm/2006/tm6A17/Weissmann, G.S.Bennett, G.Lansdale, A.L.2005Factors controlling sequence development on Quaternary fluvial fans, San Joaquin Basin, California, USASpecial Publications251London, England, UKGeological Society of Londonhttp://epswww.unm.edu/facstaff/weissman/GSW_website/pubs/SP251-169-2006.pdfAttributes added by the GIS and the data-set author were checked by inspection using a GIS. In addition, attributes were checked and evaluated as part of the review process associated with the publication of the source report.The one-square-mile cells were used to define the resolution and extent of the CVHM. There are no overlapping or duplicate grid cells.The polygon features in this dataset are computer-generated and represent the model grid and model layers of the Central Valley Hydrologic Model. The dataset is complete and is not anticipated to change.Horizontal positional accuracy of line features in the dataset was tested by visually comparing to digital maps in the region by using a GIS system.Faunt, C. C.Hanson, R.T.Belitz, K.Schmid, W.Predmore, S.P.Rewis, D.L.McPherson, K.2009Chapter C - Numerical Model of the Hydrologic LandScape and Groundwater Flow in California's Central ValleydocumentU.S. Geological Survey Professional Paper2009-1766Reston, VirginiaU.S. Geological Surveyhttps://pubs.usgs.gov/pp/1766/PP_1766.pdfFaunt, C.C.2009Groundwater Availability of the Central Valley Aquifer, CaliforniaU.S. Geological Survey Professional Paper2009-1766Reston, VirginiaU.S. Geological Survey500000online2009publication dateFaunt and others (2009)model gridFaunt, Claudia C.Belitz, KennethHanson, Randall T.2010Development of a three-dimensional model of sedimentary texture in valley-fill deposits of Central Valley, California, USAHydrogeology JournalVolume 18, Number 3 (2010)Berlin, Germany & Heidelberg, GermanySpringer-Verlaghttp://www.springerlink.com/content/5q5736403v144648/online2009publication dateFaunt and others (2010)coarse- and fine-grained texture analysisWilliamson, A. K.Prudic, D. E.Swain, L. A.1989Ground-water flow in the Central Valley, CaliforniaProfessional Paper1401-DReston, VAU.S. Geological Surveyhttps://pubs.usgs.gov/pp/1401d/report.pdfonline2009publication dateWilliamson and others (1989)Central Valley Regional Aquifer System Analysis (CV-RASA) modelA GIS was used to develop a polygon file representing the flow-model grid. The grid is comprised of 441 rows and 98 columns. It has a uniform horizontal discretization of 1x1 square mile and is oriented parallel to the valley axis, 34 degrees west of north (Faunt, 2009). A cell number (CELLNUM) was added representing an ID, starting from the upper left cell and wrapping left to right, top to bottom. The ZONE Package includes attributes representing the geologic units in each model layer (the Corcoran Clay Member of the Tulare Formation, bedrock, and other geologic provinces of the 10 layers of the CVHM). This geologic information was interpolated from the source data. In addition, the active cells in model layers 2 and 3 are identified (Faunt, 2009).Faunt (2009)2009042010482600Faunt and others (2009)Faunt, C.C.USGSHydrologistmailing and physical address4165 Spruance Road, Suite 200San DiegoCA92101USA(619) 225-6142ccfaunt@usgs.govCentral Valley, comprised of the Sacramento Valley on the north and the San Joaquin Valley on the south, located in the state of California.VectorG-polygon43218Albers Conical Equal Area29.50000045.500000-120.00000023.0000000.0000000.000000coordinate pair16091609metersNorth American Datum of 1983Geodetic Reference System 806378137.000000298.257222North American Vertical Datum of 19880.000010feetExplicit elevation coordinate included with horizontal coordinatesZONEZones (ZONE) - Defines arrays of different zones. Parameters may be composed of one or many zones (Harbaugh and others, 2000)dataset originatorFIDInternal feature number.ESRI0bedrock or inactivedataset originatorSequential unique whole numbers that are automatically generated.ShapeFeature geometry.ESRI0bedrock or inactivedataset originatorCoordinates defining the features.OBJECTIDInternal feature number.ESRI0bedrock or inactivedataset originatorCELLNUMHydrologic model grid cell number, beginning in northwest (upper left) and wrapping west to east (left to right) and south (down).dataset originatorSequential unique whole numbers that are automatically generated.ROWHydrologic model grid row number, starting in the north and increasing to the southdataset originator0bedrock or inactivedataset originatorCOLUMN_Hydrologic model grid column number, starting on westside and increasing to the east.dataset originator198Integerl1zoneqpcLayer1, QPC zone. Zones used to assign permeability based on geologic units.dataset originator0bedrock or inactivedataset originator10area 10 - ReddingMetadata author11area 11 - Western SacramentoMetadata author12area 12 - Eastern SacramentoMetadata author20area 20 - Northwest San JoaquinMetadata author21area 21 - Southwest San JoaquinMetadata author22area 22 - Northeast San JoaquinMetadata author23area 23 - East Central San JoaquinMetadata author24area 24 - Southeast San JoaquinMetadata author30area 30 - TulareMetadata author75QPcMetadata authorl2zoneqpcLayer2, QPC zone. Zones used to assign permeability based on geologic units.dataset originator0bedrock or inactivedataset originator10area 10 - ReddingMetadata author11area 11 - Western SacramentoMetadata author12area 12 - Eastern SacramentoMetadata author20area 20 - Northwest San JoaquinMetadata author21area 21 - Southwest San JoaquinMetadata author22area 22 - Northeast San JoaquinMetadata author23area 23 - East Central San JoaquinMetadata author24area 24 - Southeast San JoaquinMetadata author30area 30 - TulareMetadata author75QPcMetadata author98layers 4 and 5 where the Corcoran Clay does not existMetadata author99upper layer of bedrockMetadata authorl3zoneqpcLayer3, QPC zone. Zones used to assign permeability based on geologic units.dataset originator0bedrock or inactivedataset originator10area 10 - ReddingMetadata author11area 11 - Western SacramentoMetadata author12area 12 - Eastern SacramentoMetadata author20area 20 - Northwest San Joaquin (Stockton)Metadata author21area 21 - Southwest San Joaquin (Westlands)Metadata author22area 22 - Northeast San JoaquinMetadata author23area 23 - East Central San JoaquinMetadata author24area 24 - Southeast San JoaquinMetadata author30area 30 - TulareMetadata author75QPcMetadata author81San JoaquinMetadata author99upper layer of bedrockMetadata authorl4zoneLayer4, QPC zone. Zones used to assign permeability based on geologic units.dataset originator0bedrock or inactivedataset originator51Corcoran exists and < 10 ft thick (87 cells)Metadata author52Corcoran clay exists and between 10 and 20 ft thick (1072 cells)Metadata author53Corcoran clay exists and > 20 ft thick and deeper than 30 ft from landsurfaceMetadata author98layers 4 and 5 where the Corcoran Clay does not existMetadata authorl5zoneLayer5, QPC zone. Zones used to assign permeability based on geologic units.dataset originator0bedrock or inactivedataset originator51Corcoran exists and < 10 ft thick (87 cells)Metadata author52Corcoran clay exists and between 10 and 20 ft thick (1072 cells)Metadata author53Corcoran clay exists and > 20 ft thick and deeper than 30 ft from landsurfaceMetadata author98layers 4 and 5 where the Corcoran Clay does not existMetadata authorl6zoneqpcLayer6, QPC zone. Zones used to assign permeability based on geologic units.dataset originator0bedrock or inactivedataset originator10area 10 - ReddingMetadata author11area 11 - Western SacramentoMetadata author12area 12 - Eastern SacramentoMetadata author20area 20 - Northwest San JoaquinMetadata author21area 21 - Southwest San Joaquin (Westlands)Metadata author22area 22 - Northeast San JoaquinMetadata author23area 23 - East Central San JoaquinMetadata author24area 24 - Southeast San JoaquinMetadata author30area 30 - TulareMetadata author60below corcoranMetadata author75QPcMetadata author81San JoaquinMetadata author99upper layer of bedrockMetadata authorl7zoneqpcLayer7, QPC zone. Zones used to assign permeability based on geologic units.dataset originator0bedrock or inactivedataset originator10area 10 - ReddingMetadata author11area 11 - Western SacramentoMetadata author12area 12 - Eastern SacramentoMetadata author20area 20 - Northwest San JoaquinMetadata author21area 21 - Southwest San Joaquin (Westlands)Metadata author22area 22 - Northeast San JoaquinMetadata author23area 23 - East Central San JoaquinMetadata author24area 24 - Southeast San JoaquinMetadata author30area 30 - TulareMetadata author60below corcoranMetadata author75QPcMetadata author81San JoaquinMetadata author99upper layer of bedrockMetadata authorl8zoneqpcLayer8, QPC zone. Zones used to assign permeability based on geologic units.dataset originator0bedrock or inactivedataset originator10area 10 - ReddingMetadata author11area 11 - Western SacramentoMetadata author12area 12 - Eastern SacramentoMetadata author20area 20 - Northwest San JoaquinMetadata author21area 21 - Southwest San Joaquin (Westlands)Metadata author22area 22 - Northeast San JoaquinMetadata author23area 23 - East Central San JoaquinMetadata author24area 24 - Southeast San JoaquinMetadata author30area 30 - TulareMetadata author60below corcoranMetadata author75QPcMetadata author81San JoaquinMetadata author99upper layer of bedrockMetadata authorl9zoneqpcLayer9, QPC zone. Zones used to assign permeability based on geologic units.dataset originator0bedrock or inactivedataset originator10area 10 - ReddingMetadata author11area 11 - Western SacramentoMetadata author12area 12 - Eastern SacramentoMetadata author20area 20 - Northwest San JoaquinMetadata author21area 21 - Southwest San Joaquin (Westlands)Metadata author22area 22 - Northeast San JoaquinMetadata author23area 23 - East Central San JoaquinMetadata author24area 24 - Southeast San JoaquinMetadata author30area 30 - TulareMetadata author60below corcoranMetadata author75QPcMetadata author81San JoaquinMetadata author99upper layer of bedrockMetadata authorl10zoneqpcLayer10, QPC zone. Zones used to assign permeability based on geologic units.dataset originator0bedrock or inactivedataset originator10area 10 - ReddingMetadata author11area 11 - Western SacramentoMetadata author12area 12 - Eastern SacramentoMetadata author20area 20 - Northwest San JoaquinMetadata author21area 21 - Southwest San Joaquin (Westlands)Metadata author22area 22 - Northeast San JoaquinMetadata author23area 23 - East Central San JoaquinMetadata author24area 24 - Southeast San JoaquinMetadata author30area 30 - TulareMetadata author60below corcoranMetadata author75QPcMetadata author81San JoaquinMetadata author99upper layer of bedrockMetadata authorlay2_actActive Cellsdataset originator0bedrock or inactivedataset originator1ActiveMetadata author2ActiveMetadata author98layers 4 and 5 where the Corcoran Clay does not existMetadata authorlay3_actActive Cellsdataset originator0bedrock or inactivedataset originator1Activedataset originator2Activedataset originatorEach model-grid polygon-feature has 18 attributes. Three attributes are automatically generated by the GIS (FID, OBJECTID, and Shape) for internal software purposes. The remaining attributes were assigned by the author (dataset originator) to define the 10 zones that are used to augment the hydraulic properties for the CVHM. These zones were then used to assign permeability.noneU.S. Geological SurveyAsk USGS -- Water Webserver Teammailing address445 National CenterRestonVA20192USA1-888-275-8747 (1-888-ASK-USGS)https://water.usgs.gov/user_feedback_form.html
Downloadable Data
Digital geospatial datasets for the numerical model of the hydrogeologic landscape and groundwater flow in California's Central Valley.
Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials.
The use of firm, trade, or brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. The names mentioned in this document may be trademarks or registered trademarks of their respective trademark owners.SHPESRI Shapefileunzip5.605https://water.usgs.gov/GIS/dsdl/pp1766_ZONE.zipNone. This dataset is provided by the USGS as a public service.201120120824U.S. Geological SurveyAsk USGS -- Water Webserver Teammailing address445 National CenterRestonVA20192USA1-888-275-8747 (1-888-ASK-USGS)https://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Datase+pp1766_ZONEFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998